From d9e810a8701b92371232eece5896a799c33de505 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 8 Jul 2014 00:00:30 +0200
Subject: Issue #12523: asynchat.async_chat.push() now raises a TypeError if it
 doesn't get a bytes string

---
 Lib/asynchat.py | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Lib/asynchat.py')

diff --git a/Lib/asynchat.py b/Lib/asynchat.py
index f1a5731bae..0cc91a8d57 100644
--- a/Lib/asynchat.py
+++ b/Lib/asynchat.py
@@ -181,6 +181,9 @@ class async_chat (asyncore.dispatcher):
         self.close()
 
     def push (self, data):
+        if not isinstance(data, (bytes, bytearray, memoryview)):
+            raise TypeError('data argument must be byte-ish (%r)',
+                            type(data))
         sabs = self.ac_out_buffer_size
         if len(data) > sabs:
             for i in range(0, len(data), sabs):
-- 
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